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<li class="navelem"><a class="el" href="dir_5956a3e80a20e8e03eb577bedb92689f.html">gpu</a></li>  </ul>
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<div class="title">GpuIndexIVFFlat.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) Facebook, Inc. and its affiliates.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * This source code is licensed under the MIT license found in the</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;GpuIndexIVF.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="keyword">namespace </span>faiss { <span class="keyword">struct </span>IndexIVFFlat; }</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">class </span>IVFFlat;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">class </span>GpuIndexFlat;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">   20</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> : <span class="keyword">public</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html">GpuIndexIVFConfig</a> {</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;  <span class="keyword">inline</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a>()</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;      : <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">useFloat16IVFStorage</a>(<span class="keyword">false</span>) {</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;  }</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">  /// Whether or not IVFFlat inverted list storage is in float16;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">  /// supported on all architectures</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">   27</a></span>&#160;<span class="comment"></span>  <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">useFloat16IVFStorage</a>;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;};</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">/// faiss::IndexIVFFlat</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">   32</a></span>&#160;<span class="comment"></span><span class="keyword">class </span><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">GpuIndexIVFFlat</a> : <span class="keyword">public</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">GpuIndexIVF</a> {</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; <span class="keyword">public</span>:<span class="comment"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">  /// Construct from a pre-existing faiss::IndexIVFFlat instance, copying</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">  /// data over to the given GPU, if the input index is trained.</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"></span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a33fe6f13e34cd0708ae981f0c0b381ef">GpuIndexIVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;                  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a>* index,</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;                  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a>());</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">  /// Constructs a new instance with an empty flat quantizer; the user</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">  /// provides the number of lists desired.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment"></span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a33fe6f13e34cd0708ae981f0c0b381ef">GpuIndexIVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;                  <span class="keywordtype">int</span> dims,</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;                  <span class="keywordtype">int</span> nlist,</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;                  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric,</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;                  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a>());</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  ~<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">GpuIndexIVFFlat</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">  /// Reserve GPU memory in our inverted lists for this number of vectors</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a329d7734f1285788d10c1fbf1f88d72f">reserveMemory</a>(<span class="keywordtype">size_t</span> numVecs);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">  /// Initialize ourselves from the given CPU index; will overwrite</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">  /// all data in ourselves</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a96fd66c31c7e46b1549ed61d1b3476f3">copyFrom</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a>* index);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">  /// Copy ourselves to the given CPU index; will overwrite all data</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">  /// in the index instance</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a345980d7ae4b5baadf93f647fc6cb0b1">copyTo</a>(<a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a>* index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">  /// After adding vectors, one can call this to reclaim device memory</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">  /// to exactly the amount needed. Returns space reclaimed in bytes</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment"></span>  <span class="keywordtype">size_t</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#adaa727f3e951068501ebf381b001f3bd">reclaimMemory</a>();</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a88676a893e9b44041e7a52327d960b54">reset</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3c5b3760acb01814892fe93c72f08304">train</a>(<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160; <span class="keyword">protected</span>:<span class="comment"></span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">  /// Called from GpuIndex for add/add_with_ids</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#ad45ecb52cc736f89378661007ea731d2">addImpl_</a>(<span class="keywordtype">int</span> n,</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">Index::idx_t</a>* ids) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">  /// Called from GpuIndex for search</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#abc85b8bc2e42b7d399f9c2561ae14ad0">searchImpl_</a>(<span class="keywordtype">int</span> n,</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                   <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                   <span class="keywordtype">int</span> k,</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                   <span class="keywordtype">float</span>* distances,</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                   <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">Index::idx_t</a>* labels) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> ivfFlatConfig_;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">  /// Desired inverted list memory reservation</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment"></span>  <span class="keywordtype">size_t</span> reserveMemoryVecs_;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">  /// Instance that we own; contains the inverted list</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment"></span>  <a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html">IVFFlat</a>* index_;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;};</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;} } <span class="comment">// namespace</span></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFFlat_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFFlat.html">faiss::gpu::IVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IVFFlat_8cuh_source.html#l00015">IVFFlat.cuh:15</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a33fe6f13e34cd0708ae981f0c0b381ef"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a33fe6f13e34cd0708ae981f0c0b381ef">faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat</a></div><div class="ttdeci">GpuIndexIVFFlat(GpuResources *resources, const faiss::IndexIVFFlat *index, GpuIndexIVFFlatConfig config=GpuIndexIVFFlatConfig())</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00023">GpuIndexIVFFlat.cu:23</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_ad45ecb52cc736f89378661007ea731d2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#ad45ecb52cc736f89378661007ea731d2">faiss::gpu::GpuIndexIVFFlat::addImpl_</a></div><div class="ttdeci">void addImpl_(int n, const float *x, const Index::idx_t *ids) override</div><div class="ttdoc">Called from GpuIndex for add/add_with_ids. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00202">GpuIndexIVFFlat.cu:202</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a96fd66c31c7e46b1549ed61d1b3476f3"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a96fd66c31c7e46b1549ed61d1b3476f3">faiss::gpu::GpuIndexIVFFlat::copyFrom</a></div><div class="ttdeci">void copyFrom(const faiss::IndexIVFFlat *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00077">GpuIndexIVFFlat.cu:77</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html">faiss::gpu::GpuIndexIVFConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00023">GpuIndexIVF.h:23</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_adaa727f3e951068501ebf381b001f3bd"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#adaa727f3e951068501ebf381b001f3bd">faiss::gpu::GpuIndexIVFFlat::reclaimMemory</a></div><div class="ttdeci">size_t reclaimMemory()</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00149">GpuIndexIVFFlat.cu:149</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig_html_ab98ac354bcd5632976f7edc2deda6e57"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">faiss::gpu::GpuIndexIVFFlatConfig::useFloat16IVFStorage</a></div><div class="ttdeci">bool useFloat16IVFStorage</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8h_source.html#l00027">GpuIndexIVFFlat.h:27</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html">faiss::gpu::GpuResources</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8h_source.html#l00021">GpuResources.h:21</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00024">IndexIVFFlat.h:24</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a3c5b3760acb01814892fe93c72f08304"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3c5b3760acb01814892fe93c72f08304">faiss::gpu::GpuIndexIVFFlat::train</a></div><div class="ttdeci">void train(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00172">GpuIndexIVFFlat.cu:172</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">faiss::gpu::GpuIndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00035">GpuIndexIVF.h:35</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_ad3f0d3071f987baabbdd3da4500c87ea"><div class="ttname"><a href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a345980d7ae4b5baadf93f647fc6cb0b1"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a345980d7ae4b5baadf93f647fc6cb0b1">faiss::gpu::GpuIndexIVFFlat::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexIVFFlat *index) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00121">GpuIndexIVFFlat.cu:121</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a329d7734f1285788d10c1fbf1f88d72f"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a329d7734f1285788d10c1fbf1f88d72f">faiss::gpu::GpuIndexIVFFlat::reserveMemory</a></div><div class="ttdeci">void reserveMemory(size_t numVecs)</div><div class="ttdoc">Reserve GPU memory in our inverted lists for this number of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00069">GpuIndexIVFFlat.cu:69</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_abc85b8bc2e42b7d399f9c2561ae14ad0"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#abc85b8bc2e42b7d399f9c2561ae14ad0">faiss::gpu::GpuIndexIVFFlat::searchImpl_</a></div><div class="ttdeci">void searchImpl_(int n, const float *x, int k, float *distances, Index::idx_t *labels) const override</div><div class="ttdoc">Called from GpuIndex for search. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00224">GpuIndexIVFFlat.cu:224</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">faiss::gpu::GpuIndexIVFFlatConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8h_source.html#l00020">GpuIndexIVFFlat.h:20</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">faiss::gpu::GpuIndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8h_source.html#l00032">GpuIndexIVFFlat.h:32</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a88676a893e9b44041e7a52327d960b54"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a88676a893e9b44041e7a52327d960b54">faiss::gpu::GpuIndexIVFFlat::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00160">GpuIndexIVFFlat.cu:160</a></div></div>
<div class="ttc" id="namespacefaiss_html_afd12191c638da74760ff397cf319752c"><div class="ttname"><a href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a></div><div class="ttdeci">MetricType</div><div class="ttdoc">Some algorithms support both an inner product version and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00044">Index.h:44</a></div></div>
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